<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>border_image</title>
	<style type="text/css">
		div {
			width: 900px;
			height: 500px;
			border: 50px solid;
			border-image: ''
		}
	</style>
</head>
<body>
	<div></div>
</body>
</html>